********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 24 August 2006 Vol. XIX No. 034 ______________________________________________________________________ GENERAL INFORMATION: To receive this information electronically, contact: ser7@maia.usno.navy.mil or use MJD = Julian Date - 2 400 000.5 days UT2-UT1 = 0.022 sin(2*pi*T) - 0.012 cos(2*pi*T) - 0.006 sin(4*pi*T) + 0.007 cos(4*pi*T) where pi = 3.14159265... and T is the date in Besselian years. TT = TAI + 32.184 seconds DUT1= (UT1-UTC) transmitted with time signals = +0.2 seconds beginning 27 April 2006 at 0000 UTC Beginning 1 January 2006: TAI-UTC(BIPM) = 33.000 000 seconds ********************************************************************** * No leap second will be introduced into UTC on December 31, 2006. * * Last positive leap second introduced in UTC on December 31, 2005. * * * * See notice at the end of this Bulletin A for more details. * ********************************************************************** ________________________________________________________________________ The contributed observations used in the preparation of this Bulletin are available at . The contributed analysis results are based on data from Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), the Global Positioning System (GPS) satellites, Lunar Laser Ranging (LLR), and meteorological predictions of variations in Atmospheric Angular Momentum (AAM). ________________________________________________________________________ COMBINED EARTH ORIENTATION PARAMETERS: IERS Rapid Service MJD x error y error UT1-UTC error " " " " s s 6 8 18 53965 .09943 .00002 .25702 .00003 .175106 .000015 6 8 19 53966 .09814 .00003 .25623 .00002 .175276 .000015 6 8 20 53967 .09666 .00003 .25556 .00002 .175462 .000013 6 8 21 53968 .09521 .00002 .25514 .00002 .175502 .000014 6 8 22 53969 .09404 .00002 .25491 .00002 .175358 .000014 6 8 23 53970 .09297 .00002 .25461 .00001 .175048 .000011 6 8 24 53971 .09169 .00002 .25412 .00001 .174521 .000010 _______________________________________________________________________ PREDICTIONS: The following formulas will not reproduce the predictions given below, but may be used to extend the predictions beyond the end of this table. x = .0514 + .1754 cos A + .0318 sin A - .1324 cos C - .1432 sin C y = .3534 + .0349 cos A - .1538 sin A - .1432 cos C + .1324 sin C UT1-UTC = .1156 - .00061 (MJD - 53976) - (UT2-UT1) where A = 2*pi*(MJD-53971)/365.25 and C = 2*pi*(MJD-53971)/435. TAI-UTC(MJD 53972) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-53971)**0.80 S t = 0.00025 (MJD-53971)**0.75 Estimated accuracies are: Predictions 10 d 20 d 30 d 40 d Polar coord's 0.004 0.007 0.010 0.013 UT1-UTC 0.0014 0.0024 0.0032 0.0040 MJD x(arcsec) y(arcsec) UT1-UTC(sec) 2006 8 25 53972 0.0904 0.2535 0.17375 2006 8 26 53973 0.0890 0.2528 0.17289 2006 8 27 53974 0.0877 0.2521 0.17207 2006 8 28 53975 0.0863 0.2514 0.17135 2006 8 29 53976 0.0849 0.2507 0.17073 2006 8 30 53977 0.0834 0.2500 0.17025 2006 8 31 53978 0.0820 0.2493 0.16986 2006 9 1 53979 0.0805 0.2486 0.16958 2006 9 2 53980 0.0789 0.2479 0.16942 2006 9 3 53981 0.0774 0.2472 0.16929 2006 9 4 53982 0.0758 0.2465 0.16907 2006 9 5 53983 0.0742 0.2459 0.16861 2006 9 6 53984 0.0726 0.2453 0.16782 2006 9 7 53985 0.0710 0.2447 0.16666 2006 9 8 53986 0.0693 0.2441 0.16519 2006 9 9 53987 0.0676 0.2436 0.16358 2006 9 10 53988 0.0659 0.2431 0.16201 2006 9 11 53989 0.0641 0.2426 0.16065 2006 9 12 53990 0.0624 0.2421 0.15960 2006 9 13 53991 0.0606 0.2417 0.15887 2006 9 14 53992 0.0588 0.2413 0.15839 2006 9 15 53993 0.0569 0.2409 0.15804 2006 9 16 53994 0.0551 0.2405 0.15769 2006 9 17 53995 0.0532 0.2402 0.15724 2006 9 18 53996 0.0513 0.2399 0.15662 2006 9 19 53997 0.0493 0.2396 0.15579 2006 9 20 53998 0.0474 0.2393 0.15476 2006 9 21 53999 0.0454 0.2391 0.15355 2006 9 22 54000 0.0434 0.2389 0.15223 2006 9 23 54001 0.0414 0.2388 0.15085 2006 9 24 54002 0.0394 0.2386 0.14948 2006 9 25 54003 0.0374 0.2385 0.14816 2006 9 26 54004 0.0353 0.2384 0.14696 2006 9 27 54005 0.0332 0.2384 0.14589 2006 9 28 54006 0.0311 0.2384 0.14495 2006 9 29 54007 0.0290 0.2384 0.14413 2006 9 30 54008 0.0269 0.2384 0.14336 2006 10 1 54009 0.0247 0.2385 0.14255 2006 10 2 54010 0.0225 0.2386 0.14158 2006 10 3 54011 0.0204 0.2387 0.14034 2006 10 4 54012 0.0182 0.2389 0.13877 2006 10 5 54013 0.0160 0.2391 0.13689 2006 10 6 54014 0.0137 0.2393 0.13479 2006 10 7 54015 0.0115 0.2396 0.13266 2006 10 8 54016 0.0093 0.2399 0.13069 2006 10 9 54017 0.0070 0.2402 0.12904 2006 10 10 54018 0.0047 0.2406 0.12773 2006 10 11 54019 0.0025 0.2410 0.12675 2006 10 12 54020 0.0002 0.2414 0.12596 2006 10 13 54021 -0.0021 0.2419 0.12525 2006 10 14 54022 -0.0044 0.2424 0.12448 2006 10 15 54023 -0.0067 0.2429 0.12359 2006 10 16 54024 -0.0090 0.2435 0.12253 2006 10 17 54025 -0.0113 0.2441 0.12129 2006 10 18 54026 -0.0136 0.2448 0.11990 2006 10 19 54027 -0.0159 0.2454 0.11839 2006 10 20 54028 -0.0183 0.2461 0.11682 2006 10 21 54029 -0.0206 0.2469 0.11525 2006 10 22 54030 -0.0229 0.2477 0.11376 2006 10 23 54031 -0.0252 0.2485 0.11239 2006 10 24 54032 -0.0275 0.2493 0.11119 2006 10 25 54033 -0.0299 0.2502 0.11016 2006 10 26 54034 -0.0322 0.2511 0.10928 2006 10 27 54035 -0.0345 0.2521 0.10848 2006 10 28 54036 -0.0368 0.2531 0.10767 2006 10 29 54037 -0.0391 0.2541 0.10676 2006 10 30 54038 -0.0414 0.2552 0.10563 2006 10 31 54039 -0.0436 0.2563 0.10422 2006 11 1 54040 -0.0459 0.2574 0.10250 2006 11 2 54041 -0.0482 0.2586 0.10054 2006 11 3 54042 -0.0504 0.2598 0.09846 2006 11 4 54043 -0.0527 0.2611 0.09644 2006 11 5 54044 -0.0549 0.2623 0.09465 2006 11 6 54045 -0.0571 0.2637 0.09320 2006 11 7 54046 -0.0593 0.2650 0.09209 2006 11 8 54047 -0.0615 0.2664 0.09125 2006 11 9 54048 -0.0637 0.2678 0.09055 2006 11 10 54049 -0.0658 0.2692 0.08986 2006 11 11 54050 -0.0680 0.2707 0.08908 2006 11 12 54051 -0.0701 0.2723 0.08816 2006 11 13 54052 -0.0722 0.2738 0.08707 2006 11 14 54053 -0.0743 0.2754 0.08584 2006 11 15 54054 -0.0763 0.2770 0.08451 2006 11 16 54055 -0.0784 0.2787 0.08312 2006 11 17 54056 -0.0804 0.2804 0.08175 2006 11 18 54057 -0.0824 0.2821 0.08046 2006 11 19 54058 -0.0843 0.2838 0.07931 2006 11 20 54059 -0.0862 0.2856 0.07834 2006 11 21 54060 -0.0882 0.2874 0.07756 2006 11 22 54061 -0.0900 0.2893 0.07697 2006 11 23 54062 -0.0919 0.2911 0.07650 2006 11 24 54063 -0.0937 0.2930 0.07606 2006 11 25 54064 -0.0955 0.2950 0.07555 2006 11 26 54065 -0.0972 0.2969 0.07487 2006 11 27 54066 -0.0990 0.2989 0.07393 2006 11 28 54067 -0.1007 0.3010 0.07271 2006 11 29 54068 -0.1023 0.3030 0.07125 2006 11 30 54069 -0.1039 0.3051 0.06965 2006 12 1 54070 -0.1055 0.3072 0.06806 2006 12 2 54071 -0.1071 0.3093 0.06663 2006 12 3 54072 -0.1086 0.3115 0.06546 2006 12 4 54073 -0.1101 0.3137 0.06461 2006 12 5 54074 -0.1115 0.3159 0.06404 2006 12 6 54075 -0.1129 0.3181 0.06365 2006 12 7 54076 -0.1143 0.3204 0.06330 2006 12 8 54077 -0.1156 0.3227 0.06277 2006 12 9 54078 -0.1168 0.3250 0.06210 2006 12 10 54079 -0.1181 0.3273 0.06126 2006 12 11 54080 -0.1193 0.3296 0.06027 2006 12 12 54081 -0.1204 0.3320 0.05916 2006 12 13 54082 -0.1215 0.3344 0.05799 2006 12 14 54083 -0.1226 0.3368 0.05681 2006 12 15 54084 -0.1236 0.3392 0.05569 2006 12 16 54085 -0.1246 0.3417 0.05469 2006 12 17 54086 -0.1255 0.3442 0.05385 2006 12 18 54087 -0.1264 0.3466 0.05319 2006 12 19 54088 -0.1272 0.3491 0.05270 2006 12 20 54089 -0.1280 0.3516 0.05235 2006 12 21 54090 -0.1287 0.3542 0.05204 2006 12 22 54091 -0.1294 0.3567 0.05168 2006 12 23 54092 -0.1300 0.3593 0.05116 2006 12 24 54093 -0.1306 0.3618 0.05039 2006 12 25 54094 -0.1311 0.3644 0.04935 2006 12 26 54095 -0.1316 0.3670 0.04806 2006 12 27 54096 -0.1320 0.3696 0.04663 2006 12 28 54097 -0.1324 0.3722 0.04520 2006 12 29 54098 -0.1327 0.3749 0.04389 2006 12 30 54099 -0.1330 0.3775 0.04282 2006 12 31 54100 -0.1332 0.3801 0.04205 2007 1 1 54101 -0.1334 0.3828 0.04154 2007 1 2 54102 -0.1335 0.3854 0.04123 2007 1 3 54103 -0.1336 0.3881 0.04100 2007 1 4 54104 -0.1336 0.3908 0.04074 2007 1 5 54105 -0.1336 0.3934 0.04035 2007 1 6 54106 -0.1335 0.3961 0.03978 2007 1 7 54107 -0.1334 0.3988 0.03905 2007 1 8 54108 -0.1332 0.4014 0.03817 2007 1 9 54109 -0.1329 0.4041 0.03720 2007 1 10 54110 -0.1326 0.4068 0.03621 2007 1 11 54111 -0.1322 0.4095 0.03527 2007 1 12 54112 -0.1318 0.4121 0.03442 2007 1 13 54113 -0.1314 0.4148 0.03372 2007 1 14 54114 -0.1309 0.4175 0.03319 2007 1 15 54115 -0.1303 0.4201 0.03283 2007 1 16 54116 -0.1297 0.4228 0.03261 2007 1 17 54117 -0.1290 0.4254 0.03246 2007 1 18 54118 -0.1283 0.4281 0.03228 2007 1 19 54119 -0.1275 0.4307 0.03196 2007 1 20 54120 -0.1266 0.4333 0.03139 2007 1 21 54121 -0.1257 0.4360 0.03052 2007 1 22 54122 -0.1248 0.4386 0.02936 2007 1 23 54123 -0.1238 0.4412 0.02801 2007 1 24 54124 -0.1228 0.4437 0.02663 2007 1 25 54125 -0.1217 0.4463 0.02535 2007 1 26 54126 -0.1205 0.4489 0.02431 2007 1 27 54127 -0.1193 0.4514 0.02357 2007 1 28 54128 -0.1181 0.4540 0.02310 2007 1 29 54129 -0.1168 0.4565 0.02283 2007 1 30 54130 -0.1154 0.4590 0.02266 2007 1 31 54131 -0.1140 0.4614 0.02247 2007 2 1 54132 -0.1126 0.4639 0.02217 2007 2 2 54133 -0.1111 0.4664 0.02169 2007 2 3 54134 -0.1095 0.4688 0.02103 2007 2 4 54135 -0.1079 0.4712 0.02020 2007 2 5 54136 -0.1063 0.4736 0.01925 2007 2 6 54137 -0.1046 0.4759 0.01824 2007 2 7 54138 -0.1028 0.4783 0.01725 2007 2 8 54139 -0.1011 0.4806 0.01634 2007 2 9 54140 -0.0992 0.4829 0.01556 2007 2 10 54141 -0.0974 0.4852 0.01494 2007 2 11 54142 -0.0954 0.4874 0.01447 2007 2 12 54143 -0.0935 0.4896 0.01414 2007 2 13 54144 -0.0915 0.4918 0.01390 2007 2 14 54145 -0.0894 0.4940 0.01365 2007 2 15 54146 -0.0873 0.4961 0.01328 2007 2 16 54147 -0.0852 0.4983 0.01266 2007 2 17 54148 -0.0830 0.5003 0.01172 2007 2 18 54149 -0.0808 0.5024 0.01042 2007 2 19 54150 -0.0785 0.5044 0.00883 2007 2 20 54151 -0.0763 0.5064 0.00709 2007 2 21 54152 -0.0739 0.5084 0.00540 2007 2 22 54153 -0.0715 0.5103 0.00390 2007 2 23 54154 -0.0691 0.5122 0.00269 2007 2 24 54155 -0.0667 0.5140 0.00178 2007 2 25 54156 -0.0642 0.5159 0.00110 2007 2 26 54157 -0.0617 0.5177 0.00057 2007 2 27 54158 -0.0591 0.5194 0.00007 2007 2 28 54159 -0.0566 0.5211 -0.00046 2007 3 1 54160 -0.0539 0.5228 -0.00110 2007 3 2 54161 -0.0513 0.5245 -0.00187 2007 3 3 54162 -0.0486 0.5261 -0.00278 2007 3 4 54163 -0.0459 0.5277 -0.00379 2007 3 5 54164 -0.0431 0.5293 -0.00486 2007 3 6 54165 -0.0404 0.5308 -0.00595 2007 3 7 54166 -0.0375 0.5323 -0.00698 2007 3 8 54167 -0.0347 0.5338 -0.00791 2007 3 9 54168 -0.0318 0.5352 -0.00872 2007 3 10 54169 -0.0290 0.5365 -0.00938 2007 3 11 54170 -0.0260 0.5379 -0.00992 2007 3 12 54171 -0.0231 0.5391 -0.01035 2007 3 13 54172 -0.0201 0.5404 -0.01075 2007 3 14 54173 -0.0171 0.5416 -0.01122 2007 3 15 54174 -0.0141 0.5428 -0.01186 2007 3 16 54175 -0.0111 0.5439 -0.01281 2007 3 17 54176 -0.0081 0.5449 -0.01412 2007 3 18 54177 -0.0050 0.5460 -0.01578 2007 3 19 54178 -0.0019 0.5470 -0.01769 2007 3 20 54179 0.0012 0.5479 -0.01964 2007 3 21 54180 0.0043 0.5488 -0.02145 2007 3 22 54181 0.0075 0.5497 -0.02296 2007 3 23 54182 0.0107 0.5505 -0.02412 2007 3 24 54183 0.0138 0.5512 -0.02498 2007 3 25 54184 0.0170 0.5519 -0.02564 2007 3 26 54185 0.0202 0.5526 -0.02622 2007 3 27 54186 0.0234 0.5532 -0.02686 2007 3 28 54187 0.0267 0.5538 -0.02763 2007 3 29 54188 0.0299 0.5544 -0.02859 2007 3 30 54189 0.0332 0.5548 -0.02977 2007 3 31 54190 0.0364 0.5553 -0.03112 2007 4 1 54191 0.0397 0.5557 -0.03255 2007 4 2 54192 0.0430 0.5560 -0.03394 2007 4 3 54193 0.0463 0.5563 -0.03517 2007 4 4 54194 0.0496 0.5566 -0.03620 2007 4 5 54195 0.0529 0.5568 -0.03702 2007 4 6 54196 0.0562 0.5569 -0.03759 2007 4 7 54197 0.0595 0.5570 -0.03793 2007 4 8 54198 0.0628 0.5571 -0.03809 2007 4 9 54199 0.0661 0.5571 -0.03821 2007 4 10 54200 0.0694 0.5570 -0.03826 2007 4 11 54201 0.0728 0.5569 -0.03842 2007 4 12 54202 0.0761 0.5568 -0.03886 2007 4 13 54203 0.0794 0.5566 -0.03964 2007 4 14 54204 0.0827 0.5564 -0.04069 2007 4 15 54205 0.0860 0.5561 -0.04202 2007 4 16 54206 0.0894 0.5558 -0.04348 2007 4 17 54207 0.0927 0.5554 -0.04489 2007 4 18 54208 0.0960 0.5550 -0.04610 2007 4 19 54209 0.0993 0.5545 -0.04694 2007 4 20 54210 0.1026 0.5540 -0.04743 2007 4 21 54211 0.1059 0.5534 -0.04764 2007 4 22 54212 0.1092 0.5528 -0.04770 2007 4 23 54213 0.1125 0.5521 -0.04774 2007 4 24 54214 0.1158 0.5514 -0.04793 2007 4 25 54215 0.1190 0.5506 -0.04833 2007 4 26 54216 0.1223 0.5498 -0.04894 2007 4 27 54217 0.1255 0.5489 -0.04971 2007 4 28 54218 0.1288 0.5480 -0.05057 2007 4 29 54219 0.1320 0.5470 -0.05144 2007 4 30 54220 0.1352 0.5460 -0.05237 2007 5 1 54221 0.1384 0.5450 -0.05318 2007 5 2 54222 0.1416 0.5438 -0.05388 2007 5 3 54223 0.1448 0.5427 -0.05439 2007 5 4 54224 0.1480 0.5415 -0.05472 2007 5 5 54225 0.1511 0.5402 -0.05492 2007 5 6 54226 0.1543 0.5389 -0.05502 2007 5 7 54227 0.1574 0.5376 -0.05510 2007 5 8 54228 0.1605 0.5362 -0.05523 2007 5 9 54229 0.1636 0.5348 -0.05548 2007 5 10 54230 0.1666 0.5333 -0.05596 2007 5 11 54231 0.1697 0.5318 -0.05672 2007 5 12 54232 0.1727 0.5302 -0.05773 2007 5 13 54233 0.1757 0.5286 -0.05888 2007 5 14 54234 0.1787 0.5269 -0.05998 2007 5 15 54235 0.1817 0.5252 -0.06092 2007 5 16 54236 0.1846 0.5234 -0.06153 2007 5 17 54237 0.1876 0.5216 -0.06171 2007 5 18 54238 0.1905 0.5198 -0.06151 2007 5 19 54239 0.1933 0.5179 -0.06112 2007 5 20 54240 0.1962 0.5160 -0.06068 2007 5 21 54241 0.1990 0.5140 -0.06030 2007 5 22 54242 0.2018 0.5120 -0.06012 2007 5 23 54243 0.2046 0.5099 -0.06007 2007 5 24 54244 0.2074 0.5078 -0.06023 2007 5 25 54245 0.2101 0.5056 -0.06058 2007 5 26 54246 0.2128 0.5034 -0.06094 2007 5 27 54247 0.2154 0.5012 -0.06124 2007 5 28 54248 0.2181 0.4989 -0.06142 2007 5 29 54249 0.2207 0.4966 -0.06145 2007 5 30 54250 0.2233 0.4943 -0.06133 2007 5 31 54251 0.2258 0.4919 -0.06107 2007 6 1 54252 0.2283 0.4894 -0.06065 2007 6 2 54253 0.2308 0.4870 -0.06012 2007 6 3 54254 0.2333 0.4844 -0.05955 2007 6 4 54255 0.2357 0.4819 -0.05905 2007 6 5 54256 0.2381 0.4793 -0.05873 2007 6 6 54257 0.2404 0.4767 -0.05864 2007 6 7 54258 0.2428 0.4740 -0.05879 2007 6 8 54259 0.2450 0.4713 -0.05914 2007 6 9 54260 0.2473 0.4686 -0.05956 2007 6 10 54261 0.2495 0.4658 -0.06009 2007 6 11 54262 0.2517 0.4630 -0.06053 2007 6 12 54263 0.2538 0.4602 -0.06072 2007 6 13 54264 0.2559 0.4573 -0.06062 2007 6 14 54265 0.2580 0.4544 -0.06022 2007 6 15 54266 0.2600 0.4514 -0.05960 2007 6 16 54267 0.2620 0.4484 -0.05890 2007 6 17 54268 0.2639 0.4454 -0.05823 2007 6 18 54269 0.2658 0.4424 -0.05767 2007 6 19 54270 0.2677 0.4393 -0.05715 2007 6 20 54271 0.2695 0.4362 -0.05678 2007 6 21 54272 0.2712 0.4331 -0.05650 2007 6 22 54273 0.2730 0.4299 -0.05628 2007 6 23 54274 0.2747 0.4268 -0.05602 2007 6 24 54275 0.2763 0.4235 -0.05575 2007 6 25 54276 0.2779 0.4203 -0.05533 2007 6 26 54277 0.2794 0.4170 -0.05474 2007 6 27 54278 0.2809 0.4137 -0.05397 2007 6 28 54279 0.2824 0.4104 -0.05302 2007 6 29 54280 0.2838 0.4071 -0.05192 2007 6 30 54281 0.2852 0.4037 -0.05069 2007 7 1 54282 0.2865 0.4003 -0.04950 2007 7 2 54283 0.2877 0.3969 -0.04840 2007 7 3 54284 0.2890 0.3934 -0.04755 2007 7 4 54285 0.2901 0.3900 -0.04705 2007 7 5 54286 0.2912 0.3865 -0.04679 2007 7 6 54287 0.2923 0.3830 -0.04674 2007 7 7 54288 0.2933 0.3795 -0.04675 2007 7 8 54289 0.2943 0.3759 -0.04665 2007 7 9 54290 0.2952 0.3724 -0.04635 2007 7 10 54291 0.2960 0.3688 -0.04572 2007 7 11 54292 0.2968 0.3652 -0.04475 2007 7 12 54293 0.2976 0.3616 -0.04350 2007 7 13 54294 0.2983 0.3580 -0.04214 2007 7 14 54295 0.2989 0.3544 -0.04080 2007 7 15 54296 0.2995 0.3507 -0.03955 2007 7 16 54297 0.3000 0.3471 -0.03851 2007 7 17 54298 0.3005 0.3434 -0.03771 2007 7 18 54299 0.3009 0.3397 -0.03711 2007 7 19 54300 0.3013 0.3360 -0.03662 2007 7 20 54301 0.3016 0.3323 -0.03616 2007 7 21 54302 0.3018 0.3286 -0.03565 2007 7 22 54303 0.3020 0.3249 -0.03491 2007 7 23 54304 0.3021 0.3212 -0.03399 2007 7 24 54305 0.3022 0.3174 -0.03291 2007 7 25 54306 0.3022 0.3137 -0.03171 2007 7 26 54307 0.3022 0.3100 -0.03041 2007 7 27 54308 0.3020 0.3062 -0.02906 2007 7 28 54309 0.3019 0.3025 -0.02769 2007 7 29 54310 0.3016 0.2987 -0.02648 2007 7 30 54311 0.3013 0.2950 -0.02548 2007 7 31 54312 0.3010 0.2913 -0.02475 2007 8 1 54313 0.3006 0.2875 -0.02439 2007 8 2 54314 0.3001 0.2838 -0.02428 2007 8 3 54315 0.2995 0.2800 -0.02432 2007 8 4 54316 0.2989 0.2763 -0.02438 2007 8 5 54317 0.2982 0.2726 -0.02433 2007 8 6 54318 0.2975 0.2689 -0.02406 2007 8 7 54319 0.2967 0.2651 -0.02354 2007 8 8 54320 0.2959 0.2614 -0.02282 2007 8 9 54321 0.2949 0.2577 -0.02195 2007 8 10 54322 0.2939 0.2541 -0.02109 2007 8 11 54323 0.2929 0.2504 -0.02030 2007 8 12 54324 0.2918 0.2467 -0.01965 2007 8 13 54325 0.2906 0.2431 -0.01923 2007 8 14 54326 0.2893 0.2394 -0.01902 2007 8 15 54327 0.2880 0.2358 -0.01889 2007 8 16 54328 0.2867 0.2322 -0.01880 2007 8 17 54329 0.2852 0.2286 -0.01875 2007 8 18 54330 0.2837 0.2250 -0.01862 2007 8 19 54331 0.2821 0.2215 -0.01835 2007 8 20 54332 0.2805 0.2180 -0.01788 2007 8 21 54333 0.2788 0.2145 -0.01715 2007 8 22 54334 0.2770 0.2110 -0.01622 2007 8 23 54335 0.2752 0.2075 -0.01517 2007 8 24 54336 0.2733 0.2041 -0.01415 These predictions are based on all announced leap seconds. CELESTIAL POLE OFFSET SERIES: NEOS Celestial Pole Offset Series MJD dpsi error deps error (msec. of arc) 53952 -65.34 .15 -6.25 .34 53953 -65.04 .19 -6.08 .34 53954 -64.74 .19 -5.92 .34 53955 -64.57 .24 -5.85 .34 53956 -64.52 .18 -5.77 .34 53957 -64.63 .18 -5.62 .34 53958 -64.98 .18 -5.54 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 53952 -0.074 0.060 -0.269 0.340 53953 -0.059 0.076 -0.229 0.340 53954 -0.060 0.076 -0.226 0.340 53955 -0.074 0.095 -0.248 0.340 53956 -0.093 0.072 -0.280 0.340 53957 -0.099 0.072 -0.299 0.340 53958 -0.095 0.072 -0.290 0.340 The IERS Conventions recommended software to predict celestial pole offsets is available at ftp://maia.usno.navy.mil/conventions/chapter5/ ceppred.f and software for the calculation of the dX and dY with respect to IAU2000A Nutation/Precession Theory can be found at the web site in section chapter 5. ************************************************************************** Important Notices - Important Notices - Important Notices ************************************************************************** A positive leap second was introduced in UTC on 31 December 2005. The sequence of dates of the UTC second markers will be: 2005 December 31, 23h 59m 59s 2005 December 31, 23h 59m 60s 2006 January 1, 0h 0m 0s The difference between UTC and the International Atomic Time (TAI) is: from 1999 January 1, 0h UTC, to 2006 January 1 0h UTC : UTC-TAI = - 32s from 2006 January 1, 0h UTC, until further notice : UTC-TAI = - 33s ************************************************************************** Important Notice - IAU 2000 Resolution Compliancy Information ************************************************************************** Resolutions passed at the 24th General Assembly of the International Astronomical Union (IAU) recommend the implementation of a number of new procedures concerning the transformation between the celestial and terrestrial reference systems. Information regarding these procedures is available in Chapter 5 of the IERS Conventions 2003 available at . With these resolutions, beginning on 1 January 2003, IERS Bulletins A and B will publish new products in addition to those already published. These products will include the celestial pole offsets X_obs-X_IAU2000A and Y_obs-Y_IAU2000A where X_obs and Y_obs are the observed X, Y coordinates of the Celestial Intermediate Pole in the Geocentric Celestial Reference System, and X_IAU2000A and Y_IAU2000A are the celestial pole coordinates provided by using the IAU2000A Precession-Nutation theory. It is expected that Celestial Pole offsets related to the IAU1980 Nutation Theory will continue to be published through 15 January 2006. The new celestial pole offsets related to the new IAU2000A Precession-Nutation theory will be produced in a separate data file as well as appended to to this file. ************************************************************************** Important Notice - IAU 2000 Resolution Compliancy Information **************************************************************************